The effect of electric field on tin (IV) antimonate
column bed to separate cobalt and uranium was investigated.
Separation was carried out from nitrate solution and ionic
strength of 0.6. Variation of applied potential, time and pH were
investigated. Ion mobilities at pH 1 are calculated and given to
be 5.5 9 10-
4
and 2.73 9 10-
4
cm2 V-
1
s-
1
for cobalt and
uranyl ion respectively. Number of theoretical plate heights
were calculated from the breakthrough curve and given to be
354 and 210 for cobalt and uranyl ions, respectively. Diffusion
coefficient were calculated according to Nernst equation and
found to be of 7.6 9 10-
6
and 3.5 9 10-
6
cm2 s-
1
for cobalt
and uranyl ions, respectively. Also, breakthrough capacities
were calculated and found to be 0.7 mmol g-
1
for cobalt ion
and 0.4 mmol g-
1
for uranyl ion, respectively.